In my mind the true "deals" are due to temporary market forces not calendar time x inflation. SKS was $100 25 years ago, not a deal really then or now, just inflation.
ARs as mentioned above are the deal right now. In general terms, AR quality and selection has never been greater and prices have never been lower. What did a generic Bushmaster and 30 rd magazines cost early to mid-90's (pre-ban)? I'm asking because I wasn't buying ARs then, wasn't the cost the same or more then as now? Only now we can get a superior PSA Premium line AR for "Bushmaster money" (or less?) and all the GI magazines with superior Magpul followers we want for $8-$9 per, Magpul Gen IIs as low as $9 per and any other AR mag is no more than $15 or so max.
Oh, and good quality $35-$40 forged aluminum lowers? Fughettaboutit!